The majority of Dog Ear books are printed on-demand in response to orders in quantities as little as one at a time. Dog Ear can also print your book in a traditional offset manner,which dramatically reduces your per-unit cost. However, to achieve order quantities start at 2,000 units for such reduced printing prices.
Chronic respiratory diseases. WHO/Marko Kokic. Chronic respiratory diseases (CRDs) are diseases of the airways and other structures of the lung. Some of the most common are chronic obstructive pulmonary disease (COPD), asthma, occupational lung diseases and pulmonary hypertension.
Common viral respiratory diseases are illnesses caused by a variety of viruses that have similar traits and affect the upper respiratory tract. The viruses involved may be the influenza viruses, respiratory syncytial virus (RSV), parainfluenza viruses, or respiratory adenoviruses.